refactor: assert data in nested nodes

Author: ParanoidUser

kata/6-kyu/parse-a-linked-list-from-a-string/main/Node.java

@@ -1,20 +1,9 @@
-record Node(int data, Node next) {
-  Node(int data) {
-    this(data, null);
-  }
+import lombok.AllArgsConstructor;
+import lombok.RequiredArgsConstructor;
 
-  @Override
-  public boolean equals(Object other) {
-    return other instanceof Node && toString().equals(other.toString());
-  }
-
-  @Override
-  public int hashCode() {
-    return toString().hashCode();
-  }
-
-  @Override
-  public String toString() {
-    return data + " -> " + next;
-  }
+@AllArgsConstructor
+@RequiredArgsConstructor
+class Node {
+  final int data;
+  Node next;
 }

kata/6-kyu/parse-a-linked-list-from-a-string/test/SolutionTest.java

@@ -6,8 +6,16 @@
 class SolutionTest {
   @Test
   void sample() {
+    var n1 = Kata.parseLinkedList("1 -> null");
+    assertEquals(1, n1.data);
+    assertNull(n1.next);
+
+    var n2 = Kata.parseLinkedList("1 -> 2 -> 3 -> null");
+    assertEquals(1, n2.data);
+    assertEquals(2, n2.next.data);
+    assertEquals(3, n2.next.next.data);
+    assertNull(n2.next.next.next);
+
     assertNull(Kata.parseLinkedList("null"));
-    assertEquals(new Node(1), Kata.parseLinkedList("1 -> null"));
-    assertEquals(new Node(1, new Node(2, new Node(3))), Kata.parseLinkedList("1 -> 2 -> 3 -> null"));
   }
 }